Device for laying a flexible material web

Abstract

A device for laying a flexible material web 1 on a point of deposit 4 and which has at least one pair of deposit rollers 2, 3 that rotate in opposite directions. The deposit rollers 2, 3 form part of a deposit carriage 5 which is reciprocated in a reversible direction over at least the deposit length L of the material web 1 . The device is more cost-effective in that the deposit carriage 5 has a smaller width than the point of deposit 4 and is reciprocated in a reversible direction over at least the deposit width B of the point of deposit 4.

1. A device for laying a flexible material web onto at least one point of deposit which has a deposit length L and a deposit width B, comprising
 a deposit carriage, 
 means mounting the deposit carriage to a supporting rack for reciprocation over the deposit length L of the one point of deposit and for transverse reciprocation over the deposit width B of the one point of deposit, with said deposit carriage mounting at least one pair of deposit rollers which rotate in opposite directions and act to deliver the material web onto the at least one point of deposit, 
 wherein the deposit carriage has a smaller width than the width B of the one point of deposit, 
 a transport belt for transporting the material web along a path of travel to the deposit rollers, and 
 a path compensation carriage positioned in the path of travel of the transport belt, with the path compensation carriage having a width which is less than the width B of the one point of deposit. 
 
   
   
     2. The device according to  claim 1 , wherein the deposit carriage is a component of a frame which is mounted to the supporting rack in such a manner that it can be transversely reciprocated. 
   
   
     3. The device according to  claim 1 , wherein the mounting means is configured such that the deposit carriage is adjustable in height. 
   
   
     4. The device according to  claim 1 , wherein the deposit carriage is configured to selectively overlie two points of deposit. 
   
   
     5. The device according to  claim 1 , further comprising hold-down means for overlying the uppermost deposited material web on the one point of deposit. 
   
   
     6. The device according to  claim 5 , wherein the hold-down means is adjustable in height. 
   
   
     7. The device according to  claim 5 , wherein the hold-down means comprises at least one hold-down roller. 
   
   
     8. The device according to  claim 5 , wherein the hold-down means comprises a pair of hold-down rollers which are translatable with the deposit carriage in the transverse direction, at least over the deposit width B. 
   
   
     9. The device according to  claim 5 , wherein the hold-down means comprises at least one hold-down belt. 
   
   
     10. The device according to  claim 9 , wherein the hold-down belt extends at least over the one point of deposit. 
   
   
     11. The device according to  claim 10 , wherein the hold-down belt comprises a penetrating opening which is always disposed synchronously to the position of the deposit carriage or to the exit side of the material web from the deposit rollers. 
   
   
     12. The device according to  claim 1 , wherein the material web is supplied via a material web supply device disposed upstream of the deposit rollers, and wherein the material web supply device comprises a rotary storage device. 
   
   
     13. The device according to  claim 12 , wherein the rotary storage device is driven and for this comprises a motor which is part of the entire drive system of the device and is thus synchronized to the position of the deposit carriage. 
   
   
     14. The device according to  claim 1 , wherein the material web is transported at least partly to the point of deposit between two transport belts, which form a pressure zone, and that the advancing speed of the material web is equal to the advancing speed of the transport belts. 
   
   
     15. A device for laying a flexible material web onto at least one point of deposit which has a deposit length L and a deposit width B, comprising
 a deposit carriage, 
 means mounting the deposit carriage to a supporting rack for reciprocation over the deposit length L of the one point of deposit and for transverse reciprocation over the deposit width B of the one point of deposit, with said deposit carriage mounting at least one pair of deposit rollers which rotate in opposite directions and act to deliver the material web onto the at least one point of deposit, 
 a first transport belt for transporting the material web along a path of travel to the deposit rollers and so as to loop about one of the deposit rollers of the deposit carriage, 
 a material web supply device for depositing the material web upon the first transport belt, 
 a second transport belt mounted so as to define at least one segment which is contiguous to the first transport belt so that the material web is transported in a pressure zone formed between the two transport belts, and 
 a drive motor for advancing the first and second transport belts at the same advancing speed. 
 
   
   
     16. The device according to  claim 15 , further comprising a path compensation carriage positioned in the path of travel of the first transport belt so as to compensate for the reciprocating motion of the deposit carriage and maintain a constant length of the first transport belt. 
   
   
     17. The device according to  claim 16 , wherein the deposit carriage and the path compensation carriage are reciprocated in relative opposite directions by a second drive motor. 
   
   
     18. The device according to  claim 17 , wherein the deposit carriage and the path compensation carriage are mounted on a frame which is in turn mounted to the supporting rack for transverse reciprocation with respect to the rack. 
   
   
     19. The device according to  claim 18 , wherein the width of the deposit carriage and the width of the path compensation carriage are each less than the width of the point of deposit. 
   
   
     20. The device according to  claim 15 , wherein the material web supply device includes a rotary storage device which is driven so as to be synchronized to the position of the deposit carriage and thereby compensate for the varying demand resulting from the reciprocating motion of the deposit carriage.